Abstract
Abstract Widespread stippled browning and premature senescence of leaves of grapevines were observed in grape growing regions near the Great Lakes. Those symptoms were identical to those obtained by exposing 2-year old potted ‘Concord’ and ‘Ives’ grapevines to 30 or 60 pphm ozone (O 3 ) for 6 hr, indicating that the brown leaf disorder of grapevines is oxidant stipple, a manifestation of O 3 injury.
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Claims 3
Claim · model-written summary
Stippled browning and premature senescence of grapevine leaves were widespread in grape growing regions near the Great Lakes.
- Organ / stage
- leavese1
- Outcome
- stippled browning and premature senescencee1
- Setting
- grape growing regions near the Great Lakese1
VitisOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Widespread stippled browning and premature senescence of leaves of grapevines were observed in grape growing regions near the Great Lakes”
Claim · model-written summary
Exposing potted Concord and Ives grapevines to 30 or 60 pphm ozone for 6 hr produced symptoms identical to the field symptoms.
- Material
- ‘Concord’ and ‘Ives’e2
- Treatment
- 30 or 60 pphm ozone (O 3 ) for 6 hre2
- Outcome
- symptomse2
- Comparator
- Those symptomse2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Those symptoms were identical to those obtained by exposing 2-year old potted ‘Concord’ and ‘Ives’ grapevines to 30 or 60 pphm ozone (O 3 ) for 6 hr”
Claim · model-written summary
The brown leaf disorder of grapevines is interpreted as oxidant stipple, a manifestation of ozone injury.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“indicating that the brown leaf disorder of grapevines is oxidant stipple, a manifestation of O 3 injury”
The same questions in other papers
ozone · disease · VitisPositive and negative results
7 in the opposite direction
- positive
- positive
- positive
4 papers more in this group
See all 8 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.